Google IT Support Professional Certificate Course 6 - IT Security: Defense against the digital dark arts, Module 2 - Cryptology To get certificate subscribe at: https://www.coursera.org/specializations/google-it-support ================= The whole course playlist: Google IT Support Professional Certificate https://www.youtube.com/playlist?list=PL2jykFOD1AWZlfwMPcVKwaFrRXbqObI3U ================= IT Security https://www.youtube.com/playlist?list=PL2jykFOD1AWaEXEpyRf-Im3U8WQ962Y4B ================= https://www.facebook.com/cyberassociation/ https://scsa.ge/en/online-courses/ This six-course certificate, developed exclusively by Google, includes innovative curriculum designed to prepare you for an entry-level role in IT support. A job in IT can mean in-person or remote help desk work, either in a small business or at a global company, like Google. Whether you’ve been tinkering with IT or are completely new to the field, you’ve come to the right place. If you’re looking for a job, upon completion of the certificate, you can share your information with top employers, like Bank of America, Walmart, Sprint, GE Digital, PNC Bank, Infosys, TEKsystems, UPMC, and, of course, Google. Course 6 - IT Security: Defense against the digital dark arts About the Course This course covers a wide variety of IT security concepts, tools, and best practices. It introduces threats and attacks and the many ways they can show up. We’ll give you some background of encryption algorithms and how they’re used to safeguard data. Then, we’ll dive into the three As of information security: Authentication, authorization, and accounting. We’ll also cover network security solutions, ranging from firewalls to Wifi encryption options. The course is rounded out by putting all these elements together into a multi-layered, in-depth security architecture, followed by recommendations on how to integrate a culture of security into your organization or team. At the end of this course, you’ll understand: - how various encryption algorithms and techniques work and their benefits and limitations. - various authentication systems and types. - the difference between authentication and authorization. At the end of this course, you’ll be able to: - evaluate potential risks and recommend ways to reduce risk. - make recommendations on how best to secure a network. - help others to understand security concepts and protect themselves Who is this class for: This program is intended for beginners who are interested in developing the skills necessary to perform entry-level IT support. No pre-requisite knowledge is required. However, if you do have some familiarity with IT, you can skip through any content that you might already know and speed ahead to the graded assessments. Module 2 - Cryptology In the second module of this course, we'll learn about cryptology. We'll explore different types of encryption practices and how they work. We'll show you the most common algorithms used in cryptography and how they've evolved over time. By the end of this module, you'll understand how symmetric encryption, asymmetric encryption, and hashing work; you'll also know how to choose the most appropriate cryptographic method for a scenario you may see in the workplace. Learning Objectives • Understand the how symmetric encryption, asymmetric encryption, and hashing work. • Describe the most common algorithms of cryptography. • Choose the most appropriate cryptographic method given a scenario.
Views: 237 intrigano
Devin Lundberg - No More XSS: Deploying CSP with nonces and strict-dynamic XSS, one of the most common web vulnerabilities, can be completely prevented with a strict Content Security Policy (CSP). Older versions of CSP involved the tedious process of building a whitelist of domains where scripts lived. It is very common for these whitelists to contain sites that allow for arbitrary code execution and developers cannot use inline scripts without disabling the XSS protections. Version 3 of CSP introduced a mechanism called strict-dynamic that makes applying content security policy to an existing web page possible without having to do major refactors. This talk will cover how we applied a strict CSP to pinterest.com and instapaper.com including how easy it is and some things to watch out for. I'll also cover what kinds of attacks are still possible after a strict CSP is deployed.
Views: 441 Security BSides San Francisco
Bitcoins are mined using a cryptographic algorithm called SHA-256. This algorithm is simple enough to be done with pencil and paper, as I show in this video. Not surprisingly, this is a thoroughly impractical way to mine. One round of the algorithm takes 16 minutes, 45 seconds which works out to a hash rate of 0.67 hashes per day. For details, see http://righto.com/sha
Views: 1189824 Ken Shirriff
This is a very basic visual introduction to the concepts behind a blockchain. We introduce the idea of an immutable ledger using an interactive web demo. Part 2 is here: https://youtu.be/xIDL_akeras If you are interested in playing with this on your own, it is available online at: http://anders.com/blockchain/ The code that runs this demo is also on GitHub: https://github.com/anders94/blockchain-demo I'm @anders94 on Twitter and @andersbrownworth on Steemit. Donations: BTC: 1K3NvcuZzVTueHW1qhkG2Cm3viRkh2EXJp ETH: 0x84a90e21d9d02e30ddcea56d618aa75ba90331ff ETC: 0xab75ad757c89fa33b92090193a797e6700769ef8
Views: 947702 Anders Brownworth
If Bitcoin experiences a fork, the biggest risk faced by an average user Is a replay attack. What is it? When Bitcoin split into different versions, such as BTC1, 2 or 3 etc, each Bitcoin holder will retain his holdings and receives an equal amount of the forked cryptocurrency. The address, private key and algorithm is the same on every chain. The transaction format is the same too, meaning that a transaction which is broadcasted on one chain can be relayed it to a node on another chain and receive validation. This is “Replay Attack”. Simply put, when you transfer BTC1, Your BTC2 or BTC3 can be fraudulently transferred away too. Now, many forks added replay protection to mitigate the risk of replay attacks. Huobi Global Exchange: https://www.huobi.com Follow us on: Blog: https://blog.huobi.com/ Facebook: https://www.facebook.com/huobiglobalofficial Instagram: https://www.instagram.com/huobiglobalofficial Medium: https://medium.com/@huobiglobal Telegram: https://t.me/huobiglobalofficial Twitter: https://twitter.com/HuobiGlobal Reddit: https://www.reddit.com/r/HuobiGlobal/ Youtube: https://www.youtube.com/HuobiGlobal
Views: 337 Huobi Global
Views: 46 Bitcoin update
Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Frequently Asked Questions: http://professormesser.link/faq - - - - - Now that you’ve acquired your security technology, you’ll need somewhere to place it in your network. In this video, you’ll learn about some of the best practices for placing sensors, firewalls, SSL concentrators, and other security technologies. - - - - - Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 22680 Professor Messer
How authentication works, including why passwords are a bad solution and how they can be improved with Multi-Factor Authentication, but can't and shouldn't be used with "security questions." We also look at why OAuth is an imperfect solution at best, and we finish off with a look at a new protocol that may obsolete passwords entirely. Web hosting site down after breach of 13 million plaintext passwords https://nakedsecurity.sophos.com/2015/10/30/webhosting-company-loses-13m-plaintext-passwords/ Remember Uncrackable Passwords With Your Fingers http://www.escapistmagazine.com/news/view/118622-Remember-Uncrackable-Passwords-With-Your-Fingers Revolutionizing Website Login and Authentication with SQRL https://vimeo.com/112444120 SQRL Reference Implementation (Windows) https://www.grc.com/dev/sqrl/ SQRL Login Demonstration https://www.grc.com/sqrl/demo.htm The essential SQRL concept https://www.youtube.com/watch?v=U4utxPQgKbg
Views: 3067 Shane Killian
A very simple reversing challenge for Linux GitHub: https://github.com/LiveOverflow/liveoverflow_youtube/tree/master/0x05_simple_crackme_intro_assembler http://crackmes.de http://www.hopperapp.com/ https://www.hex-rays.com/products/ida/ https://github.com/radare/radare2 -=[ 🔴 Stuff I use ]=- → Microphone:* https://amzn.to/2LW6ldx → Graphics tablet:* https://amzn.to/2C8djYj → Camera#1 for streaming:* https://amzn.to/2SJ66VM → Lens for streaming:* https://amzn.to/2CdG31I → Connect Camera#1 to PC:* https://amzn.to/2VDRhWj → Camera#2 for electronics:* https://amzn.to/2LWxehv → Lens for macro shots:* https://amzn.to/2C5tXrw → Keyboard:* https://amzn.to/2LZgCFD → Headphones:* https://amzn.to/2M2KhxW -=[ ❤️ Support ]=- → per Video: https://www.patreon.com/join/liveoverflow → per Month: https://www.youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join -=[ 🐕 Social ]=- → Twitter: https://twitter.com/LiveOverflow/ → Website: https://liveoverflow.com/ → Subreddit: https://www.reddit.com/r/LiveOverflow/ → Facebook: https://www.facebook.com/LiveOverflow/ -=[ 📄 P.S. ]=- All links with "*" are affiliate links. LiveOverflow / Security Flag GmbH is part of the Amazon Affiliate Partner Programm. #ReverseEngineering
Views: 140917 LiveOverflow
(S1: E5) Software developers often make mistakes when using cryptography in applications, which tends to result in code with dangerous and subtle weaknesses. Some of this can be addressed through training, but should we expect all developers to be cryptography experts? Many developers only know to avoid writing their own ciphers, and rely on one of the many incomplete or incorrect code examples that exist on the internet. To make things worse, most cryptographic libraries in use today are designed to be used by experts and often result in misunderstandings by the average application developer. In this talk we will look at some common cryptography usage errors and why popular libraries often fall short. We will also discuss nuances such as backwards compatibility, FIPS 140-2 validation, and weak standards such as JOSE/JWT that contribute to the overall confusion. Brice will share some advice that you can provide to the development/engineering teams in your organization to not only make their job easier, but also ensure more secure cryptographic implementations. CypherCon website: https://cyphercon.com Thank you for watching, subscribing and your support. You can now help this channel with BUY ME A COFFEE: https://www.buymeacoffee.com/VideoWorkbench Connect with Video Workbench Productions below: WEBSITE: http://www.videoworkbench.com AMAZON: https://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dinstant-video&field-keywords=Jason+Gares&rh=n%3A2858778011%2Ck%3AJason+Gareskeywords=video+workbench+productions VIMEO: https://vimeo.com/videoworkbench CURIOUS: https://curious.com/videoworkbench FACEBOOK: https://www.facebook.com/VideoWorkbenchProductions IMDb: https://www.imdb.com/name/nm7907523/?ref_=nv_sr_1 Copyright © 2018 by Jason C. Gares, Video Workbench Productions, Michael Goetzman & Korgo. All Rights Reserved.
Views: 12157 Video Workbench Productions
BLOCKCHAIN: Blockchain Beginner's Explained - Blockchain Review ★ CONTACTS ➤ [email protected] Just what is Blockchain Blockchain, the underlying modern technology that powers bitcoin, is just one of the buzzwords of the previous year. Almost everybody is speaking about blockchain, and also forever factor. Dispersed journals, the regard to art for blockchain's underlying modern technology, supply an amazing brand-new means to negotiate organisation without a main authority. Below's a nontechnical, streamlined summary of the part. Blockchain specified A blockchain, or dispersed journal, is a constantly expanding checklist (electronic documents) of encrypted purchases called "blocks" that are dispersed (duplicated) to a peer-to-peer (P2P) network of computer systems. Blocks As defined over, a blockchain is an unalterable, consecutive chain of documents referred to as blocks. A block could consist of any type of sort of information, such as one-of-a-kind electronic identifiers of physical items. Blocks are "chained" with each other utilizing hashes. A hash is a feature that takes an input worth and also from that input develops an outcome worth deterministic of the input worth. Along with individual information, each block will certainly include an index, a timestamp, a listing of purchases, an evidence as well as the hash of the previous block. The hash The hash plays an important duty. Since each brand-new block will certainly consist of a hash of the previous block, blockchains are unalterable. If a cyberpunk were to corrupt an earlier block in the blockchain, all succeeding blocks would certainly have inaccurate hashes. Encrypted purchases Encrypted purchases (making use of traditional public/private essential cryptography) are likewise vital to blockchain's worth. The customer's "public secret" is kept in a block as well as comes to be an "address" on the blockchain. Documents such as cryptocurrencies or various other electronic properties are taped as coming from a certain block. An equivalent "exclusive trick" is called for to access the linked electronic properties. Maintaining your exclusive crucial personal is so vital that to secure their electronic properties from cyberpunks, many individuals do not maintain electronic duplicates of their personal secrets. They compose the number on a paper as well as maintain the paper in a safe area (like a wall surface secure). Evidence of Job (PoW). When a blockchain is instantiated, an Evidence of Job formula (PoW) is made use of to develop or "mine" brand-new blocks. The existing bitcoin mining method offers a fine example of PoW use. This strategy is explained in Wikipedia as complies with: "A bitcoin miner runs a computer system program that gathers unofficial purchases from coin dealerships in the network. With various other information these could create a block as well as gain a settlement to the miner, however a block is approved by the network just when the miner finds by experimentation a 'nonce' number that when consisted of in the block generates a hash with an enough variety of leading absolutely no little bits to fulfill the network's problem target. Blocks approved from miners develop the bitcoin blockchain that is an expanding journal of every bitcoin purchase because the coin's initial development.". Public or exclusive. There are 2 basic sorts of blockchain networks: confidential networks, where each customer has a duplicate of the whole blockchain as well as assists procedure and also verify purchases; as well as permission-based (non-anonymous) networks, where consent is called for to have a duplicate of the blockchain as well as in order to help procedure as well as verify deals. Besides cryptocurrencies, just what can you make with blockchain? Blockchain provides a means to validate purchases without the requirement for a main authority. This implies you could develop clever agreements making use of dispersed journals. For instance, a proprietor may place an IoT door lock on your rental house. The door lock could examine the blockchain to see if your lease is paid. If it isn't really, the door lock (that is, the wise agreement) would certainly not allow you right into the home. In an extra complicated situation, a company can release its very own bonds and also purchasers can keep track of settlements by means of a dispersed journal. A much more complicated usage situation would certainly be the production of self-enforcing profession arrangements. The listing of usages for blockchain is virtually limitless. From title searches to shipment confirmation, dispersed journals provide a totally brand-new, safe and secure means to do company. Your essential inquiry is: "For this job, is a blockchain a far better selection compared to a well-crafted, safe data source?" Afterwards, you get on your method!
Views: 10459 ICO REVIEW
This video lecture is produced by S. Saurabh. He is B.Tech from IIT and MS from USA. Lecture Slides: Computer Networks A Top Down Approach by Jim Kurose and Ross Certification authority (CA) Digital Certificate free certificate authority certificate authority server certificate authority list microsoft certificate authority root certificate authority windows certificate authority certificate authority example how certificate authority works To study interview questions on Linked List watch http://www.youtube.com/playlist?list=PL3D11462114F778D7&feature=view_all To prepare for programming Interview Questions on Binary Trees http://www.youtube.com/playlist?list=PLC3855D81E15BC990&feature=view_all To study programming Interview questions on Stack, Queues, Arrays visit http://www.youtube.com/playlist?list=PL65BCEDD6788C3F27&feature=view_all To watch all Programming Interview Questions visit http://www.youtube.com/playlist?list=PLD629C50E1A85BF84&feature=view_all To learn about Pointers in C visit http://www.youtube.com/playlist?list=PLC68607ACFA43C084&feature=view_all To learn C programming from IITian S.Saurabh visit http://www.youtube.com/playlist?list=PL3C47C530C457BACD&feature=view_all
Views: 29702 saurabhschool
2018 Purdue Engineering Distinguished Lecture Series presenter Dr. Robert Kahn In this lecture, Kahn discusses "A Conceptual Basis for Managing Information in the Internet: its Implementation and Adoption" Robert E. Kahn is the CEO of Corporation for National Research Initiatives (CNRI), which he founded in 1986. He received a B.E.E. from the City College of New York in 1960, and M.A. and Ph.D. degrees from Princeton University in 1962 and 1964 respectively. He worked on the Technical Staff at Bell Laboratories and then became an Assistant Professor of Electrical Engineering at MIT. Full Abstract and Bio: http://bit.ly/kahn-lecture More on this lecture series: http://bit.ly/DistinguishedLectureSeries Presenters (in order of appearance) :00 Series Introduction Ragu Balakrishnan - Purdue Electrical and Computer Engineering Head :40 Speaker Introduction Dean Mung Chiang - Purdue Engineering 3:50 Robert Kahn, Distinguished Lecture Series Speaker Purdue Engineering: http://engineering.purdue.edu/ Facebook: http://facebook.com/PurdueEngineering Twitter: https://twitter.com/PurdueEngineers @PurdueEngineers Instagram: https://instagram.com/PurdueEngineers Contact us about this video: [email protected] Purdue's College of Engineering is among the largest in the United States and includes 13 academic programs, all with high rankings. U.S. News and World Report ranks Purdue's College of Engineering in the Top 10 nationwide: no. 7 for graduate programs and no. 8 for undergraduate programs.
Views: 319 Purdue Engineering
Google SafetyNet and Verify Apps protects over 1 billion Android devices with built-in endpoint security services, anti-virus, and protection for lost and stolen devices. Watch this video to learn about how these systems work, and how to best incorporate them into your enterprise and applications. Missed the conference? Watch all the talks here: https://goo.gl/c1Vs3h Watch more talks about Mobility & Devices here: https://goo.gl/yl1EqP
Views: 3476 Google Cloud Platform
What is Segregated Witness (SegWit)? How do you know you’re using SegWit? SegWit fixes transaction malleability and enables further upgrades towards Bitcoin smart contracts. Can transaction malleability lead to denial-of-service (DoS) attacks? Does SegWit put witness data in a different block? Did SegWit change transaction validation? versus? Are there any security risks of invalid blocks? CORRECTION: At ~2:07, I stated the incorrect BIP number for the Bech32 address format, which should be BIP173. BIP176 is about "bits" denomination. https://github.com/bitcoin/bips/blob/master/bip-0173.mediawiki More on SegWit: https://bitcoincore.org/en/2016/01/26/segwit-benefits/ These questions are from the MOOC 9.3 and 9.5 sessions which took place on March 2nd and March 16th, 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron: https://www.patreon.com/aantonop RELATED: The Lightning Network - https://www.youtube.com/playlist?list=PLPQwGV1aLnTurL4wU_y3jOhBi9rrpsYyi SegWit adoption - https://youtu.be/KCsTVTRk6I4 Advanced Bitcoin Scripting Part 1: Transactions and Multi-sig - https://youtu.be/8FeAXjkmDcQ Advanced Bitcoin Scripting Part 2: SegWit, Consensus, and Trustware - https://youtu.be/pQbeBduVQ4I How do I choose a wallet? - https://youtu.be/tN6b62sEpsY Hot vs. cold wallets - https://youtu.be/Aji_E9sw0AE SegWit adoption - https://youtu.be/KCsTVTRk6I4 Secure, tiered storage system - https://youtu.be/uYIVuZgN95M Decentralised exchanges and counterparty risk - https://youtu.be/hi_jaw0dT9M Decentralised exchanges with fiat - https://youtu.be/3Url8tbQEkA How do I secure my bitcoin? - https://youtu.be/vt-zXEsJ61U How do mnemonic seeds work? - https://youtu.be/wWCIQFNf_8g HODLing and the "get free" scheme - https://youtu.be/MhOwmsW1YNI How to get people to care about security - https://youtu.be/Ji1lS9NMz1E Bitcoin as everyday currency - https://youtu.be/xYvvSV4mjH0 Irreversibility and consumer protection - https://youtu.be/R107YWu5XzU Hyperbitcoinization - https://youtu.be/AB5MU5fXKfo Job opportunities with cryptocurrencies - https://youtu.be/89_p4pDlQtI How long until mainstream adoption? - https://youtu.be/y3cKBDBabtA What is the biggest adoption hurdle? - https://youtu.be/jHgyHF3F2TI Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in bitcoin. Follow on Twitter: @aantonop https://twitter.com/aantonop Website: https://antonopoulos.com/ He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters. THE INTERNET OF MONEY, v1: https://www.amazon.co.uk/Internet-Money-collection-Andreas-Antonopoulos/dp/1537000454/ref=asap_bc?ie=UTF8 [NEW] THE INTERNET OF MONEY, v2: https://www.amazon.com/Internet-Money-Andreas-M-Antonopoulos/dp/194791006X/ref=asap_bc?ie=UTF8 MASTERING BITCOIN: https://www.amazon.co.uk/Mastering-Bitcoin-Unlocking-Digital-Cryptocurrencies/dp/1449374042 [NEW] MASTERING BITCOIN, 2nd Edition: https://www.amazon.com/Mastering-Bitcoin-Programming-Open-Blockchain/dp/1491954388 Subscribe to the channel to learn more about Bitcoin & open blockchains! Music: "Unbounded" by Orfan (https://www.facebook.com/Orfan/) Outro Graphics: Phneep (http://www.phneep.com/) Outro Art: Rock Barcellos (http://www.rockincomics.com.br/)
Views: 12503 aantonop
Learn how to mine Bitcoin with an Excel spreadsheet. Check out the following video for info on 21's Bitcoin computer, which can actually be used to mine Bitcoins and monetize your endpoint: https://youtu.be/mLwbBojDD_U In this video, we explain the algorithm behind Bitcoin mining and show you how you could (in theory) do it yourself! Download the spreadsheet here: https://www.dropbox.com/s/2erhq2uum7fvdc2/Bitcoin.xlsx?dl=0 See more at www.knowledgevideos.net The algorithm is from Jersey: 13GFWmp4HWdidJaTxWHCcaHPrqBPfddDHK NIST SHA-256 Description: http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf
Views: 170779 Knowledge
Why is the “blockchain, not Bitcoin” line of thinking wrong? What is the purpose of blockchains? Can blockchains or special purpose cryptocurrencies be used for debt and credit systems? Will the role of fiat be reduced to this? These questions were part of the monthly live Patreon Q&A session on March 31st and the (rescheduled) April session on May 5th. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron: https://www.patreon.com/aantonop RELATED: Bitcoin vs. blockchain - https://youtu.be/kHbtp7pOftU Blockchain versus Bullshit: Thoughts on the Future of Money - https://youtu.be/SMEOKDVXlUo The value of proof-of-work - https://youtu.be/ZDGliHwstM8 The mining process - https://youtu.be/L4Xtau0YMJw Miners, pools, and consensus - https://youtu.be/JHz7LM4ncLw Bitmain and the ASICBoost allegations - https://youtu.be/t6jJDD2Aj8k Energy consumption - https://youtu.be/2T0OUIW89II Keep Digital Communities Weird - https://youtu.be/1MG1aR71uFg What is Consensus? Rules Without Rulers - https://youtu.be/2tqo7PX5Pyc Forkology: A Study of Forks For Newbies - https://youtu.be/rpeceXY1QBM The Stories We Tell About Money - https://youtu.be/ONvg9SbauMg The Killer App: Engineering the Properties of Money - https://youtu.be/MxIrc1rxhyI Bitcoin Security: Bubble Boy and the Sewer Rat - https://youtu.be/810aKcfM__Q Altcoins and specialisation - https://youtu.be/b_Yhr8h6xnA Cryptographic primitives - https://youtu.be/RIckQ6RBt5E Nonces, mining, and quantum computing - https://youtu.be/d4xXJh677J0 Migrating to post-quantum cryptography - https://youtu.be/dkXKpMku5QY Price volatility and store-of-value - https://youtu.be/wzzZT95ijTo Bitcoin as everyday currency - https://youtu.be/xYvvSV4mjH0 Inflation and debt systems - https://youtu.be/6CwxHiKf27A Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in bitcoin. Follow on Twitter: @aantonop https://twitter.com/aantonop Website: https://antonopoulos.com/ He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters. THE INTERNET OF MONEY, v1: https://www.amazon.co.uk/Internet-Money-collection-Andreas-Antonopoulos/dp/1537000454/ref=asap_bc?ie=UTF8 [NEW] THE INTERNET OF MONEY, v2: https://www.amazon.com/Internet-Money-Andreas-M-Antonopoulos/dp/194791006X/ref=asap_bc?ie=UTF8 MASTERING BITCOIN: https://www.amazon.co.uk/Mastering-Bitcoin-Unlocking-Digital-Cryptocurrencies/dp/1449374042 [NEW] MASTERING BITCOIN, 2nd Edition: https://www.amazon.com/Mastering-Bitcoin-Programming-Open-Blockchain/dp/1491954388 Subscribe to the channel to learn more about Bitcoin & open blockchains! Music: "Unbounded" by Orfan (https://www.facebook.com/Orfan/) Outro Graphics: Phneep (http://www.phneep.com/) Outro Art: Rock Barcellos (http://www.rockincomics.com.br/)
Views: 16260 aantonop
In this edition of the Blockchain Bible we present to you the word; CPU. For a full transcript or more Blockchain definitions please click the below links; Crypto-Writers.com Payhip.com/crypto https://payhip.com/crypto The Blockchain Bible Presents over 250 Blockchain and Crypto Definitions. The Ebook has been written by Blockchain and Crypto writers based all over the world. The vision is to support enthusiasts further into the world of Blockchain. The focus of the book is to define commonly used Blockchain and Crypto words and phrases. The list is forever growing. For a copy of the Ebook please contact the team at www.Crypto-Writers.com or via the below link. Please help us to spread the word and get in touch if you would like to get involved in our current or on-going projects. Please like and follow to get our latest updates. Positive Start by Mixaund | https://mixaund.bandcamp.com
Views: 2 Blockchain Bible
Partner: CharnaCoin - https://charnacoin.com/ Last Friday hospitals in the UK were hit by a large ransomware attack that officials are calling WannaCrypt. According to futurehealthcaretoday.com, attack was one of the world’s largest coordinated cyberattacks. Because of the attacks, patients were turned away, surgeries had to be postponed, and ambulances were rerouted. Damage from the attack could have been much worse if it wasn’t stopped sooner. Blockchain protects users without needing to upgrade your system. Taking blockchain as a standard may be part of the answer to preventing this type of attack in the future. Info: Bitcoingarden - https://bitcoingarden.org Coinidol - https://coinidol.com/ To add subtitles: http://www.youtube.com/timedtext_cs_panel?tab=2&c=UCWN9FtDP3d-jfJu83pGARxw Do you like our video?
Views: 17146 KCN News
Views: 75 Bitcoin Mining
Register Text or call 909 740-4675 Bitcoin mining is deliberately intended to be resource-intensive and hard so the amount of blocks found every day from miners remains steady. Individual blocks must contain a proof of job to be considered legal. This evidence of work is confirmed by additional Bitcoin nodes each time they receive a block. Bitcoin employs the hashcash proof-of-work function. The main aim of mining would be to allow Bitcoin nodes to reach a safe, tamper-resistant consensus. Mining is also the mechanism utilized to introduce Bitcoins to the system: Miners are paid any transaction fees as well as a"subsidy" of newly created coins. This serves the aim of disseminating new coins in a decentralized manner as well as motivating individuals to provide safety for the system. Bitcoin mining is so called because it resembles the mining of different commodities: it takes exertion and it slowly makes new money available at a rate that resembles the pace at which products such as gold have been mined from the earth. What's Proof of Work? An evidence of work is a piece of data that was difficult (costly, time-consuming) to produce in order to satisfy particular requirements. It must be trivial to assess whether data satisfies stated demands. Producing a proof of work can be a random process using low chance, so that a lot of trial and error is needed on average before a valid evidence of job is generated. Bitcoin uses the Hashcash evidence of work. What is Bitcoin Mining Difficulty? The Computationally-Difficult Problem Bitcoin mining a cube is more tough as the SHA-256 hash of a block's header must be lower than or equal to the target in order for the block to become approved by the community. This issue may be simplified for explanation functions: The hash of a block should start with a specific number of zeros. The likelihood of calculating a hash which begins with many zeros is extremely low, so many efforts have to be produced. In order to create a new hash each round, a nonce is incremented. Watch Proof of work to learn more. The Bitcoin Network Difficulty Metric The Bitcoin mining system difficulty is the measure of how hard it is to find a new block in comparison to the easiest it can ever be. It's recalculated every 2016 blocks to a value like the previous 2016 cubes would have been generated in exactly two weeks had everyone been mining in this problem. This may yield, on average, one block every ten minutes. As more miners join, the rate of block creation will probably go up. As the speed of block generation extends, the difficulty increases to compensate that will push the speed of block creation down. Any blocks introduced by malicious miners which don't fulfill the mandatory issue target will simply be refused by everybody on the community and thus will be unworthy. The Block Reward If a block is discovered, the discoverer will grant themselves a definite number of bitcoins, and it can be agreed-upon by everyone in the network. Now that this law is 25 bitcoins; this respect will halve every 210,000 blocks. Watch Controlled Currency Supply. Also, the miner is awarded the fees paid by consumers. The commission is an incentive to get the miner to incorporate the transaction in their own block. In the future, since the number of fresh bitcoins miners are permitted to make in each block dwindles, the charges will make up a much more important percentage of mining income. Alsace Ca How to mine Bitcoin from house 100 percent passive income Alsace Ca
Views: 2 Bert Hornback
Welcome to Crypto Academy Lecture 2. This lecture will focus on how Decentralization is achieved in the network. Specific topics to include: * Centralization vs. decentralization * Distributed consensus * Consensus without identity: the block chain * Incentives and proof of work * Putting it all together Thanks for watching. Subscribe and Hit that Bell Notification for all the Latest 👍👍👍 Support The Channel 👍👍👍 SubScribe Now : https://www.youtube.com/HOWHEDOIT?sub_confirmation=1 Buy Crypto @ CoinBase: https://www.coinbase.com/join/59f9eceabdc92c00d4d9a1df Track Your Taxes: https://cointracking.info?ref=M758326 Free BitCoin: https://freebitco.in/?r=13981142 (Dice Faucet) Discord With Me: https://discord.gg/8RdCcd6 Tweet With Me: https://twitter.com/BitcoinSLO Trade With Me: https://www.binance.com/?ref=16159030 ★★★ My Favorite CryptoSites ★★★ BitScreener: https://bitscreener.com/ TradingView Charts: https://www.tradingview.com/markets/cryptocurrencies/ CoinDesk News: https://www.coindesk.com/ Password Generator: (Creates Strong passes): https://passwordsgenerator.net/ 💰💰💰 Tips 💰💰💰 Donate RavenCoin [RVN]: RGQvqTGxkJMqF6opKptwuJKvWUNZohZBcu Donate DogeCoin [DOGE]: DKgESL2CPHh9BqRPa9NaSy6CczqEFgJCJQ Donate Verge [XVG]: DJgDAFd7uhdiRtGASZoNmnG6UjDJ1ifAZX ❗️❗️❗️ DISCLAIMER ❗️❗️❗️ The content in this video references an opinion and is for information and entertainment purposes only. It is not intended to be investment advice. Seek a duly licensed professional for investment advice. Edited With : Camtasia
Views: 21 HowHeDoIt
Welcome to Crypto Academy Lecture. This lecture will focus on discussing Bitcoin in Depth. This will be a more complex video from a technical side so I encourage you to watch it more than once. Specific topics to include: * Bitcoin transactions * Bitcoin scripts * Application of Bitcoin scripts * Bitcoin blocks * The Bitcoin network * Limitations & improvements Thanks for watching. Subscribe and Hit that Bell Notification for all the Latest 👍👍👍 Support The Channel 👍👍👍 SubScribe Now : https://www.youtube.com/HOWHEDOIT?sub_confirmation=1 Buy Crypto @ CoinBase: https://www.coinbase.com/join/59f9eceabdc92c00d4d9a1df Track Your Taxes: https://cointracking.info?ref=M758326 Free BitCoin: https://freebitco.in/?r=13981142 (Dice Faucet) Discord With Me: https://discord.gg/8RdCcd6 Tweet With Me: https://twitter.com/BitcoinSLO Trade With Me: https://www.binance.com/?ref=16159030 ★★★ My Favorite CryptoSites ★★★ BitScreener: https://bitscreener.com/ TradingView Charts: https://www.tradingview.com/markets/cryptocurrencies/ CoinDesk News: https://www.coindesk.com/ Password Generator: (Creates Strong passes): https://passwordsgenerator.net/ 💰💰💰 Tips 💰💰💰 Donate RavenCoin [RVN]: RGQvqTGxkJMqF6opKptwuJKvWUNZohZBcu Donate DogeCoin [DOGE]: DKgESL2CPHh9BqRPa9NaSy6CczqEFgJCJQ Donate Verge [XVG]: DJgDAFd7uhdiRtGASZoNmnG6UjDJ1ifAZX ❗️❗️❗️ DISCLAIMER ❗️❗️❗️ The content in this video references an opinion and is for information and entertainment purposes only. It is not intended to be investment advice. Seek a duly licensed professional for investment advice. Edited With : Camtasia
Views: 35 HowHeDoIt
TITANMINE LINK; https://www.titanmine.net/?ref=2778 Titanmine | Bitcoin Cloud Mining | 3rd Payment Proof | REVIEW 2018 PLEASE SUBSCRIBE MY CHANNEL.... LIKE&SHARE MY Channel Link: https://www.youtube.com/channel/UCDoi4TIINkvZz2o0k-vsTRw BITADVISOR LINK: https://bitadvisor.biz/?ref=bilalkhan LINK BITMINER: https://bitminer.io/3220457 bitcoin mining daily earn 0.00250000 btc free link: https://www.youtube.com/watch?v=UpXV3O0vR58 wowapp link: https://www.youtube.com/watch?v=ugcS4AQg-58&t=19s hashflare how to invest with debitcard proof link: https://www.youtube.com/watch?v=O8ImKbgYOzg&t=9s payment proof online jobs payment proof letter payment proof of champcash payment proof of digitize india payment proof template payment proof of allworkjob payment proof 2018 payment proof or payment proof payment proof of workfromhomedata.com payment proof meaning payment proof of neobux payment proof ptc site payment proof of bitcoin payment proof two dollar click payment proof of paidverts payment proof libertagia payment proof google adsense traffic monsoon payment proof payment proof of whitepins payment proof recyclix payment proof automoneysurf payment proof advertzer awsurveys payment proof adhitz payment proof adfly payment proof ajiboye payment proof adsense payment proof adclickxpress payment proof ayuwage payment proof adsptp payment proof adhexa payment proof adsterra payment proof adcash payment proof amazing5 payment proof adclickmedia payment proof adworkmedia payment proof allinoneprofits payment proof aglocoptr payment proof awsurveys payment proof 2014 payment proof bitzfree bidvertiser payment proof buxinc payment proof bitlanders payment proof bubblews payment proof bigmoneyptc payment proof buxvertise payment proof bet365 payment proof bitgold payment proof buxbery payment proof bitvisitor payment proof bux999 payment proof buxp payment proof buxept payment proof buxleader payment proof buysellads payment proof bubblews payment proof 2015 bank payment proof bitbin payment proof cloud mining cloud mining free cloud mining sites cloud mining bitcoin cloud mining calculator cloud mining ethereum cloud mining websites cloud mining free ghs cloud mining work cloud mining ripple cloud mining cryptocurrency cloud mining script cloud mining free ghs 2018 cloud mining in pakistan cloud mining without investment cloud mining pro cloud mining service litemihub cloud mining reddit cloud mining dogecoin cloud mining sites 2018 cloud mining comparison cloud mining altcoins cloud mining australia cloud mining app cloud mining adalah cloud mining aws cloud mining a scam cloud mining android cloud mining amazon cloud mining accept paypal cloud mining anbieter cloud mining azure cloud mining aeon cloud mining and taxes cloud mining affiliate program cloud mining asia cloud mining austria cloud mining advantages cloud mining any coin cloud mining account cloud mining bitcoin free cloud mining best cloud mining bitcoin cash cloud mining bytecoin cloud mining bch cloud mining bitcoin terbaik cloud mining bitcointalk cloud mining bitcoin india cloud mining best sites cloud mining bitcoin reddit cloud mining bitcoin gold cloud mining bitcoin review cloud mining biz cloud mining bitcoin legit cloud mining bitcoin indonesia cloud mining best 2018 cloud mining business model cloud mining bitcoin terpercaya cloud mining bitcoin calculator bitcoin proof of work bitcoin proof of stake bitcoin proof of ownership bitcoin proof of work vs proof of stake bitcoin proof of burn bitcoin proof of payment bitcoin proof of existence bitcoin proof of work consensus bitcoin proof of stake date bitcoin proof of work code bitcoin proof of funds bitcoin proof of work nonce bitcoin proof of capacity bitcoin proof of work change bitcoin proof of space bitcoin proof of work proof of stake bitcoin proof of work reward bitcoin proof of residence bitcoin proof of reserves bitcoin proof of work mining bitcoin proof of work algorithm bitcoin proof of work alternative bitcoin proof of concept bitcoin proof of work difficulty cloud mining in hindi, cloud mining free, cloud mining bitcoin free, cloud mining 2018, cloud mining india, cloud mining money guru, cloud mining bitcoin hindi, cloud mining, cloud mining android, cloud mining bitcoin 2018, cloud mining free hash power about bitcoin asic bitcoin asic miner best asic miner best bitcoin miner best bitcoin mining software bitcoin bitcoin block bitcoin calculator bitcoin cloud mining
Views: 211 B.M.W.A
The Internet of Things is expected to be involved in the near future in all major aspects of our modern society. On that front, we argue that 6LoWPAN is a protocol that will be a dominant player as it is the only IoT-capable protocol that brings a full IP stack to the smallest devices. As evidence of this, we can highlight the fact that even the latest ZigBee Smart Energy standard is based on ZigBee IP which itself relies on 6LoWPAN, a competitor of the initial ZigBee protocol. Efficient IP-based penetration testing tools have been available to security auditors for years now. However, it is not that easy to use them in the context of a 6LoWPAN network since you need to be able to join it first. In fact, the difficult part is to associate with the underlying IEEE 802.15.4 infrastructure. Indeed, this standard already has two iterations since its release in 2003 and it provides with several possibilities regarding network topology, data transfer model and security suite. Unfortunately, there is no off-the-shelf component that provides, out of the box, with such a wide range of capabilities. Worst still, some of them deviate from the standard and can only communicate with components from the same manufacturer. In this paper, we present the ARSEN project: Advanced Routing for 6LoWPAN and Ethernet Networks. It provides security auditors with two new tools. First, a radio scanner capable of identifying IEEE 802.15.4 infrastructures and for each one of them their specificities, including several deviations from the standard that we encountered in actual security audits. Secondly, a border router capable of routing IPv6 datagrams between Ethernet and 6LoWPAN networks while adapting to the specificities identified by the scanner. As a result, the combination of both effectively allows security auditors to use available IP-based penetration testing tools on different 6LoWPAN networks. Bio: Jonathan-Christofer Demay, PhD is the current penetration testing team leader at AIRBUS Defence and Space. As a former academic researcher, he has been working on IDS bypassing, intrusion detection and general network security. Now a consultant for various key industries and government bodies, he is working on incident response, penetration testing and social engineering. Adam Reziouk is an electronics and automation engineer currently working on wireless communications and industrial network security at AIRBUS Defence and Space. He holds a master's degree in electrical and electronic engineering and has been conducting vulnerability research activities on programmable logic controllers, connected devices and smart grids. Arnaud Lebrun is a command and control engineer currently working at AIRBUS Defence and Space. He is focusing on security issues for several projects in the aerospace industry and related areas such as radioactive waste disposal facilities or large telescopes. He also supports the penetration testing team for perimeters that include ICS infrastructures or embedded electronics.
Views: 1744 DEFCONConference
Von der Rückkehr des Einhorns bis zu Riesenschlangen und ... Battle Royale? Unser Easter-Egg-Video zu Assassin's Creed Odyssey deckt die verrücktesten Anspielungen und Geheimnisse des Spiels auf. Jetzt kaufen: https://store.ubi.com/de/assassin-s-creed-odyssey SCHÖNE FAKTEN: Das Spiel ist seit dem 05. Oktober 2018 für PlayStation®4, PC, Xbox One, Xbox One S sowie für Xbox One X erhältlich. ► HIER KAUFEN: https://store.ubi.com Folgt uns: ► Offizielle Webseite: http://www.assassinscreed.com ► YouTube: https://www.youtube.com/AssassinsCreedDE ► Twitter: https://twitter.com/Assassins_UK ► Instagram: https://www.instagram.com/ubisoftde ► Pinterest: http://www.pinterest.com/ubisoftde ► Twitch: https://www.twitch.tv/assassinscreed ► Facebook: https://www.facebook.com/assassinscreed/ ► Mehr von Ubisoft gibt es unter: http://www.ubisoft.com
Views: 11094 UbisoftDE | UbisoftTV
ROUNDTABLE DISCUSSION bringing forward all the evidence and where it leads. In tribute to the life of John F. Kennedy KERRY CASSIDY PROJECT CAMELOT http://projectcamelot.tv
Views: 26351 Project Camelot
In this session, Preethi Kasireddy explains how Proof of Work actually works in decentralized systems, gossip protocol, attacks that are possible due to selfish mining, SHA-256, and more. Join the TruStory Expert Community today https://boards.greenhouse.io/trustory/jobs/4128579002 Study Session Outline Consensus [1:00] Gossip Protocol [2:29] How the Proof of Work system works [4:54] What happens when multiple miners broadcast a valid solution at the same time? [12:31] Calculating time in a decentralized system as it relates to Proof of Work [17:19] Bitcoins difficulty adjustment algorithm [21:38] Selfish mining attacks [26:33] Chia Network (proof of space and time consensus algorithm) [33:55] Example of a 51% attack [43:40] Review from Bitcoin White Paper on how transactions work [51:59] Merkle root [53:36] _____________________________________________________________________ If interested, you can view TruStory’s study session on Bitcoin’s White Paper here: https://www.youtube.com/watch?v=QqD7IT5EcpM&t=380s Articles and writings mentioned during study session: Majority is not Enough: Bitcoin Mining is Vulnerable (by Ittay Eyal and Emin Gun Sirer): https://www.cs.cornell.edu/~ie53/publications/btcProcFC.pdf Blockchain Proof-of-Work Is a Decentralized Clock: https://grisha.org/blog/2018/01/23/explaining-proof-of-work/ A New Approach to Thwarting “Selfish” Bitcoin Miners: https://bitcoinmagazine.com/articles/new-approach-thwarting-selfish-bitcoin-miners/ Vertcoin (VTC) was successfully 51% attacked: https://medium.com/coinmonks/vertcoin-vtc-is-currently-being-51-attacked-53ab633c08a4 Connect with us: If you have questions, post em to our Discourse: https://discourse.trustory.io/ If you find false claims, @ us on Twitter: https://twitter.com/isTrustory If you wanna get updates on TruStory, check out our website: https://www.trustory.io/
Views: 94 Experts @ TruStory
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Views: 10181 SamsTechStuff
Dr. Phillip Hallam-Baker, VP and Principal Scientist, Comodo Group Inc. Public key is powerful because separate keys are used for the separate roles of encryption and decryption. See how use of three (and more) key encryptions could have stopped the NSA and CIA breaches. See the use of Mesh/Recrypt, the first open specification for CRM, demonstrated. The presentation will cover both the applications and the cryptographic techniques used. Learning Objectives: 1: Understand the next generation of public key protocols. 2: See how proxy re-encryption works and can be applied. 3: Understand opportunity for an open CRM standard. https://www.rsaconference.com/events/us18/agenda/sessions/10194-Two-Keys-Are-Better-than-One-but-Three-Keys-Are-Better-than-Two?af=7127&key5sk1=a93a163084039f36a87e5a1fcd23bad25f25e921
Views: 71 RSA Conference
In this video I will be explaning what is smart contract in blockchain in hindi or why smart contract is required in the present world. Smart contract is a computer program stored in globally in open distributed ledger in blockchain. The concept of smart contract was long before bitcoin was programmed. Vitalik buterin integrated smart contract functionality with blockchain. Most of the smart contracts are developed in Ethereum blockchain. What is blockchain in hindi: https://www.youtube.com/watch?v=cwkRBVEcwpE&t=9shain Read about blockchain in blog: http://gyanshares.com/blockchain-the-mechanism-underlying-bitcoin-transaction/#more-349 Read about smart contract in blog: http://gyanshares.com/brief-introduction-smart-contract-blockchain/
Views: 1881 Gyan Share
State of Blockchain 2017: Smartnetworks & the Blockchain Economy w/ Melanie Swan Brooklyn Futurist Meetup. September 14 2017 at Geraldo's Cafe in Brooklyn Law's Feil Hall https://www.meetup.com/BLKNY30/events/240580804/ 00:00 Introduction: Mile Taubleb + Jonathan Askin 13:19 Presentation: Melanie Swan SPEAKER: Melanie Swan is a Philosopher and Economic Theorist at the New School University in New York NY. She is the author of /Blockchain: Blueprint for a New Economy/ and has published many articles, papers and book chapters on this topic. Melanie leads The Institute for Blockchain Studies - an independent non-profit research institute examining the theoretical, philosophical, and societal implications of blockchain technology (the technology underlying Bitcoin and other cryptocurrencies). SLIDES: https://www.slideshare.net/secret/4NNNEyy2lfnok9
Views: 388 Brooklyn Futurist Meetup